Improvement in lamps



L. J. WORDEN & A. LEACH.

' Lamp. .No. 32,918. I Patented July 23, 1-861.

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UNITED STATES PATENT tries.

L. J. \VORDEN AND A. LEACH, OF UTIGA, NENV YORK, ASSIGNORS TO THEM- SELVES AND D. S. HEFFRON, OF SAME PLACE.

EMPROVEMENT IN LAMPS.

Specification forming part of Letters Patent No. 322,9RS, dated July 23, 1861.

To all whom, it may concern:

Be it known that we, L. J. VORDEN and A. LEAOH, both of Utica, in the county of. Oneida and State of New York, have invented a new and Improved Lamp for Burning Coal- Oils; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which Figure l is a vertical central section of our invention, taken in the line x as, Fig. 2. Fig. 2 is a vertical section of the same,taken in the line 3 1 Fig. 1.-

Similar letters of reference indicate corre sponding parts in the two figures.

The object of this invention is to obtain a lamp for burning coaloil in railroadcars and other places where lamps are subjected to a jolting or vibratory movement. To obviate this difficulty,we supply the flame with air by 'means of a circuitous draft-passage arranged vertically, and in such a manner as to avoid any external lateral supply of air to the flame.

To enable those skilled in the art to fully understand and construct our invention, we will proceed to describe it.

A represents the reservoir or fountain of the lamp, which may be constructed in any proper way, and B represents avertieal tube, which adjoins the fountain A, and communicates with it by a tube, 0, at its lower end.

On the top of the tube B there is secured a lamp-top, D, which may be of any of the known or approved forms employed t'orburning coal-oil. The tube Bis encompassed by tube, E, which is concentric with B, and is sufficiently larger in diameter to inclose the lower part or cup, a, of the lamp-top D, as shown clearly in both figures. The tube E extends down as low as tube B, and the bottom of the space 1) between said tubes maybe of wire-cloth or perforated metal, as shown at c. The tube E is inclosed by a still larger tube, F, which extends down below the tubes B E, so as to leave a chamber, (Z, of considerable dimensions, as shown clearly in both figures. The space 6 between the tubes E and F is about equal in width to space b between the tubes B E. The tube F need not extend quite as high as tube E, and the space 6 is covered at its upper end by a perforated plate or wirecloth, f.

From the above description it will be seen that the flame is not supplied with air by a direct lateral draft, the air being admitted to the flame by passing down the space a between the tubes E F into chamber d, and thence up through space 1) between the tubes 13 E and through the perforations in cap a of the lamptop. This arrangement admits of avery regular supply of air to the flame during a vibratory movement of the lamp, and the lamp burns with a steady flame without smoking or flickering-a result which cannot be obtained by the ordinary direct lateral or side supply of air,where the cap a is in direct con tact with the external air.

The chamber (Z is an essential feature of the invention, as it serves as a sort of reservoir to equalize the draft or supply of air to the flame. The outer tube, F, near its upper part, is perforated with holes g,which facilitate the induction of air into space 0 and have a tendency to equalize the draft.

The reservoir or body A or the lamp has a vertical tube, G, attached to its upper surface. This tube maybe of any suitable height to serve as a guide for a rod, H, the lower end of which has a float, I, attached to it. This float I may be of cork or any suitable substance that will float on the surface of the oil. The tube G issomewhat larger in diameter than the rpd H,so that air may escape through the tube.

In fillingthe reservoiror fountain A,whiehis done byQpouring oil from a filler or can through the ordinary opening, (L*, the rod H will rise and indicate the height of the oil in the fountain, and the attendant, therefore, need not overflow the lamp-reservoir, and the escape of air through the tube G admits the oil, readily passing into the reservoir from the filler or can.

The rod H may he graduated, if desired, and any suitable index may be attached to the lamp-reservoir in such relation with the rod H to indicate when the rod and oil in the fountain are at the proper height.

The lamp-top D is provided with the usual glass chimney.

Ve are aware that many contrivances have previously been employed to preserve flames 1 The combination of the concentric annular from lateral and unequal currents of air, and l passages e and b, air-chamber d, and perfodo not therefore desire to he understood as I rated shell D, all constructed and arranged as claiming novelty in this part of our invention, herein shown and described, and operating to except to the extent of the peculiar combina- I protect the flame from lateral currents of air tion and arrangement of parts which we have and equalize the draft, as explained. described.

We do not claim, broadly, the admitting of g' zg i air to the flame through a tube or passage be- J J low the lamp-top; but Witnesses:

We do claim as new, and desire to secure by l G. V. COWTAN, Letters Patent- M. M. LIVINGSTON. 

